Pull Yourself Up (Three-Seat)
★Exhibit Content: Pulley System ★Interaction: Mechanical Interaction ★Operation: Approach the exhibit, visitors sit on the seat and pull the rope, then switch to another seat and pull the rope to feel the difference in force required for different seats. ★Exhibit Description: The exhibit consists of a frame, pulley system, pneumatic buffer mechanism, and seats. The three sets of devices are respectively set to three labor-saving modes. Participants sit on the chair and pull themselves up; through the difference in the number of fixed pulleys and movable pulleys, they can feel that as the number of movable pulleys increases, pulling themselves up becomes increasingly labor-saving. ★Scientific Principle: It is possible to lift oneself without much effort, which utilizes the principle of pulleys. A pulley system consists of movable pulleys and fixed pulleys. According to the principle of pulley systems, fixed pulleys can change the direction of force, while movable pulleys can save effort; combined use can both save effort and change the direction of force. A pulley whose central axis is fixed is a fixed pulley. A fixed pulley is essentially an equal-arm lever; its characteristic is that it cannot save effort but can change the direction of force. A pulley whose axis moves with the pulled object is called a movable pulley. A movable pulley can save half the effort but cannot change the direction of force. If a movable pulley is lifted by several strands of rope, the force used is a fraction of the weight of the object.
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- 2.6*0.6*2.4m 2.6*0.6*2.4mDimensions (unit: m): 2.6*0.6*2.4m Brand: KexMall Model: PopsciCat-mechanics-017 1. Materials: ①Exhibit stand frame: 30 square tube, surface baked paint ②Enclosure: 2mm cold-rolled steel plate with surface baked paint ③Support: 120*60*3 rectangular tube, surface spray paint ④Guide bracket: 304 stainless steel ⑤Pulley system: Nylon 1010 + Φ20 hemp rope ⑥Instruction sign: 5mm acrylic UV high-definition inkjet printing 2. Main configuration: ①Cylinder (3 sets): SC80X500 ②Pressure regulating valve (3 sets): G3/8' 3. Installation requirements: ①Energy requirement: None ②Installation foundation: Fixed against the wall, wall can be drilled for expansion bolts ③Entry passage: Door frame size (width × height) ≧1.2m×2.0m, continuous turning interval of passage ≧3m ④Maintenance access: None ⑤Hall clear height: ≧3.0 meters.
★Exhibit Content: Pulley System ★Interaction: Mechanical Interaction ★Operation: Approach the exhibit, visitors sit on the seat and pull the rope, then switch to another seat and pull the rope to feel the difference in force required for different seats. ★Exhibit Description: The exhibit consists of a frame, pulley system, pneumatic buffer mechanism, and seats. The three sets of devices are respectively set to three labor-saving modes. Participants sit on the chair and pull themselves up; through the difference in the number of fixed pulleys and movable pulleys, they can feel that as the number of movable pulleys increases, pulling themselves up becomes increasingly labor-saving. ★Scientific Principle: It is possible to lift oneself without much effort, which utilizes the principle of pulleys. A pulley system consists of movable pulleys and fixed pulleys. According to the principle of pulley systems, fixed pulleys can change the direction of force, while movable pulleys can save effort; combined use can both save effort and change the direction of force. A pulley whose central axis is fixed is a fixed pulley. A fixed pulley is essentially an equal-arm lever; its characteristic is that it cannot save effort but can change the direction of force. A pulley whose axis moves with the pulled object is called a movable pulley. A movable pulley can save half the effort but cannot change the direction of force. If a movable pulley is lifted by several strands of rope, the force used is a fraction of the weight of the object.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★ Durability: ★★★★ Overall Rating: ★★★